For me indeed it takes >30 sec to get hot water in the kitchen (modern kitchens have small boilers), but the washers are near the boiler, so hot fill would be more efficient. The boiler supplies 60 deg C water though, so that is not enough for the 90 deg C program for example. And then you need a heating element anyway...
These days most washing cycles run a lot cooler. My washing powder/soap recommends 30 but I usually run at 40. I know that I need to do the occasional high temp wash too though.